Sister's room.

Snatching up your boxers, you sneak off up the stairs, jumping into the first room, at the top of the stairs. In all the chaos, you'd mistook this room for your room. Given the type of underwear on the floor, you quickly worked out who's room this was.

A rainbow assortment of thongs, G-strings, boy-shorts and other panties are covering every surface in the room and a range of bras, from plain to fancy lace, are hanging from every knob in the room apart from yours. Clearly, your sister, Natasha, has been victim of a hurricane with a panty fetish.

Making your way over to the bed, you see your sister, fast asleep, wearing only a blue t-shirt and a pair of pink boy-shorts. She'd kicked the covers off herself, sometime during the night, leaving her beautiful body on full display, as she lies on her stomach.

Her little pink boy-shorts really seemed to be struggling to contain her pert behind. The smooth tan she has making her legs look even more enticing.

Then, you remember the strange energy from before. It happened with your mother, so, why not your sister too?

You begin running your hand up your sister's body, along her leg, over her ass - giving it a playful squeeze - and over her back and head. Nothing. Not even a tingle.

Before you give up, though, Natasha turns over onto her back, stretching herself out over the bed. Most noticeable of the new position are the two small mounds on her chest, tipped with small erect nipples, poking through her shirt.

It's the last place to check and the thought of feeling your older sister's boobs excites you. Reaching out, you grab one of the mounds and squeeze.

Right as you did, the energy travelled through you, into her breast, as it did before, only not as bad. Only question you had was: what can I do with it?